SMAD5 and neoplasm: When the same analyses were done using PEA Oncology II profiling data, 10 proteins correlated to tumor stage (P < 0.05), for example, CD160, TNFRSF4/OX40L, XPNPEP2, SPARC, MAD homolog 5/SMAD5, CPE, hK8/KLK8, WIF‐1, TCL1A, and MIC‐A/B, (Fig. 3A, right panel).